Regarding the use of techniques, the most elementary are used, particularly PDCA Cycle, 5S or 5 Whys, and there is a strong adherence to TPM though without much practical result. The use of indicators for maintenance management was also considered as elementary, where a significant number ignores the specific terms, their composition and how to interpret them. In particular, the most used are MTBF, MTTR, Downtime, OEE, economic indicators and availability